The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 18, 1990
Filed:
Jan. 17, 1989
Applicant:
Inventors:
Junji Terada, Tokyo, JP;
Takeshi Sekiguchi, Yokohama, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
350588 ; 350582 ; 350164 ;
Abstract
In an optical reflection preventing film comprised of a plurality of layers provided on an optical element, one of the plurality of layers is formed by a transparent electrically conductive layer, and the optical film thickness of the transparent electrically conductive layer is 45-120 nm.
Terada, Junji. (1990). Antifogging film and optical element using the same (U.S. Patent No. 4957358). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4957358
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile